rally? nitro or elec.
although i havent written a report like our good buddy ****
i can tell you that forany kind of off road electric batteries willl get used up aufully quick therefore nitro is much better. however, if you are running it on a flat dirt surface you can gt battery and run for a good threee min. at full throttle. also if it is a flat dirt surface you can take something like an rs4 and just put rally shocks on it.